反激式开关电源变压器的设计  

The transformer design of the flyback switching power supply

作　　者：彭云华 黄土荣 廖晓文[2] 刘美 

机构地区：[1]广州东芝白云菱机电力电子有限公司,广东广州510460 [2]广东石油化工学院自动化系,广东茂名525000

出　　处：《电子设计工程》2014年第9期107-109,112,共4页Electronic Design Engineering

基　　金：广东省科技厅省部产学研项目(2012B091100042);茂名市科技计划项目(201309)

摘　　要：反激式开关电源因其体积小、效率高和轻量的特点被广泛地应用于各种电气设备和系统中。针对工作在断续电流工作模式(DCM)下的反激式开关电源变压器存在工作性能差、不稳定等问题,提出了一种新的反激式开关电源变压器设计方法,通过调整变压器的磁芯型号、初级电感大小、气隙大小、匝数等参数指标,并给出了一设计实例。实验证明,根据本文的设计方法,在断续电流模式下,反激式变压器能性能良好、稳定可靠。Because of its small size,high efficiency and lightweight,fly-back switching power supply is widely used in a variety of electrical equipment and systems.Flyback transformer that worked in discontinuous curent mode had many issues such as poor performance and unstable.This paper provided the concrete method about the design of flyback transformers by adjusting the transformer core model,the primary inductor size,gap size,and other parameters indicator turns,and a design example is given in the paper.Experiment results show that the fly-back transformer is stable and with good performance in discontinuous current mode according to the design method described in this article.

关 键 词：开关电源 反激式变压器 断续电流模式 设计 

分 类 号：TN702[电子电信—电路与系统]